Lubricating-cup.



P. G MARGETTS & C M. HUMMELL.

LUBRICATING CUP. APPLlCATlON man 050.2 1915" wiwag Batentedluly 18, we

PHILIP G. M'AItGrETTS AIlQD CHABIlES M. HUMMELL, OF CHICAGO, ILLINOIS.

' I harmonise-cur.

Application filed December 3, 1915; Serial No. 64,820.

To all whom it may concern:

Be it known that we, PHILIP G. Manen'rrs and CHARLES M. HUMMELL, citizens of the United States, and residents'of the city oi Chicago, in the county of Cook and State of' Illinois, have invented certain new and useful Improvements 1n Lubricating-Cups; and

we do hereby declare that the following is" this specification.

Great v.diiiiculty, annoyance and inconvenience, and. at times serious damage, has occurred due to the loss of all or part of lubricating or grease cups on one of the moving members of a machine. This is particularly true in the case of high speed mechanisms, and where the ordinary grease cup'is used in the event that the same becomes loosened and is thrown 015?, a person struck thereby may be seriously injured or perhaps killed. This is largely due to the fact that the ordinary type of grease cup is threaded into the mechanism which it is desired to lubricate andif such mechanism is a mov- 3 3 ing element, in time the grease cup or a part thereof will become loosened and thrown on.

.This invention relates to a means for positively locking the base of a lubricating cup in place on a mechanism, said base provided with a looking or retaining means for the adjustable parts of the cup by which the grease is forced into the rmechanism pre- .ventingloss or accidental loosening move 'ment thereof.

It is an object therefore'of this invention to' construct a lubricating cup provided with a base adapted to be secured to a pal to be lubricated the base having means assoeiated therewith for positively locking the same on said means, and witha retaining cap fora movable plunger threaded on said base and releasably locked thereon and carrying a ratchetlacting mechanism to prevent retractive movement (if the plunger from thebase,

Itisalso object of this invention to construct a grease cup comprising a base ction to. a part to be lubricated'having a spring impelled locking means to prevent accidental detachment of said" base and with ,afthieaded plunger Specification of Letters IPatent.

Patented July 18, 1916.

mounted in said base extending through' a' retaining collar or cap threaded on said base, said retaining collar releasably locked to said base and provided, with ratchet means to prevent retractive movement of the plunger except when said means is re .tracted. 1

terlocked to prevent accidental loss,- and with a locking means for positively locking the grease cup attached on the member which it is desired to lubricate.

It is finally an object of this invention to construct an improved type of lubricating cup with the parts interlocked to prevent loss thereof, and provided with locking means for locking the cup positively to a mechanism to be lubricated.

The invention (in a preferred form) is Inthe drawings: Figure 1 is a fragmentary elevation of a connecting rod'equipped illustrated in the drawings and hereinafter more fully described.

with lubricating cups embodying the principles of our invention. Fig. 2 is an enlarged side elevation of one of the lubricating cups. Fig. 3 is a central vertical section taken through the cup on line 83 of: Fig. 2, with parts shown in elevation. Fig. 4 is a top plan view of the base member of the cup. Fig. 5 is a top plan view of the cup as shown in Fig. 2. Fig. 6 is a fragmentary detail section taken on line 6-6 ofFig. 3.

As shown in the drawings: The reference numerall,indicates as a vhole a connecting rod, having mounted in the ends thereof grease cups embodyingthe principles of our invention. For this purpose a cylindrical container orbase member 2, having a lower threaded ex ension 3, is threaded into the aperture provided for the purpose in the connecting rod, and is internally threaded to receivetherein a plunger 4, for forcing the lubricant therelhrough, the outer end of which is squared as indicated by the reference numeral 5, to permit easy actuation by the fingers or application of atool thereto,

if necessary, to rotate the same and thereby impart movement thereto inwardly or out wardly in the container., Threaded on the upper end of the base member 2, is an apertured retaining collar or cap 6, the aperture therein, however, being ofless diameter than I the lower threaded portion of said plunger l, so that said plunger may not be entirely unthreadcd from the base except by removal of said collar 6.

Said plunger @1, is made hollow merely for lightness, through not necessarily so, and four longitudimllly disposed long ratchet teeth or ribs 7, are cut on the exterior there of. Slidably mounted in a horizontal recess in a boss 8, formed on said retaining collar 6, is a spring impelled ratchet tooth provided on its rear end with right angled actuating finger piece 10, threaded. thereinto, which, when thrown to the-left, as shown in Fig. 6, permits projection of said tooth 9, into engagement with the teeth 7, on said plunger, and when thrown to the right with. reference to Fig, 6, holds said tooth ll, retracted, said linger iece l0, resting in a small recess at the on of the boss 8. Mount- .ed in a vertical aperture or recess within a boss formed on said cap is a small plunger 11, provided with a. stem l2, threaded thereinto and extending upwardly therefrom and bent outwardly at a right angle for convenient actuation of said plunger in retracting the same Coiled about said stem is'a.

compression spring 13, which acts normally to impel said plunger downwardly and into engagement with. a recessl l, provided in the base member 2, whereby said collar 6, is locked from movement on said base member. Said plunger 11, may be retracted by the stem handle 12, and maintained retracted ;.by throwing said stem handle to one side or the other of the recess 15, in whichthe stem normally seats when said plunger 11, is in looking or projected position, such as shown in Fig. 3.

Similar locking means to that already described is provided for the base member 2, in the connecting rod 1, and consists of a plunger 16, provided with an actuating stem 17, threaded therein-to and slidably nioainted in a vertmal recess formed in said l ase member Coiled about the stem 17,

lyithinthe recess for said plunger is a compression spring 18, normally acting to impel said plunger downwardly and into engage-- ment with a recess provided therefor in the -connecting rod 1, so as to lock said base member 2, thereon, and prevent rotational 1 orunthreading movement thereof from the connecting rod. 1

lhe operation is as follows: In mounting the grease cup on a mechanism to be lubrihated, the base member 2, first threaded tightly into theaperture provided for the purpose, and the location of the plunger 16,

. suitable means for the purpose. The base 2,

with respect to the member marked by any is then detached from the member to be 1uall hricated, and a small hole drilled into the member to receive said plunger 16, when the hose 2, is again attached theretmsc as jto b amines the plunger 11, mounted in said cap, latching in the recess 14, provided therefor in the upper surface of the base. Due to the fact that the lower threaded end of the plum ger 4, is of greater diameter than the central aperture through the retaining collar 6, it is impossible to detach the plunger l, without first detaching the cap 6, from the base 22. As a fiirthcr precaution" against accidental retractivc movcmentot' the plunger =l,-by an 'unthreading or rotational movement thereof, the spring impelled ratchet tooth 9, is provided, mounted horizontally in the boss 8, on saidcollar 6, and engaging the longitudinal teeth 7, provided on said plunger l. All of said respective locking members are similar in design and each may be retracted by the of this invention, and we therefore do not purpose limiting, the patent granted otherwise than necessitated bythe prior art.

We claim asour invention:

1. In a lubricating cup of the class described the combination with a base and plunger threaded therein, of a retaining collar threaded on said base to prevent detaclr ment of the plunger therefrom, and locking" mechanisms associated with said base and collar-to lock said base to a member to which. the same is attached and to lock the collar to said base to prevent retractiverotation of said plunger in said base.

In a lubricating cup of the class described a base forattaohment to a member to be lubricated, a plunger mounted therein to force lubricant therefrom into said mem ber, means retaining said plunger'a'ttached to said base, and locking mechanism for positivelylocking saidfbase to said-member to prevent accidentaldetachment of tl e lubricating cup therefrom.

3. In a lubricating cup of the class de scribed a base, a. plunger threaded therein, a

collar threaded on said base, locking means. to interlock said collar with said base to pre vent rctractive rotational movement of said collar from said base, and ,ratchet means asretractive rotation of said aee- , sociated with said collar adapted to prevent) H V 14?; lubricating cup 01' the'lass described subscribe' our names iii the presence c r sing a base, means forclng lubricant subscribing WItIlBSSBS.

iii .ffifi'om, locking device, to prevent acciy 'J xie zit'iii Qeta'chn'ient of said means therefrom,

5 amPineEhanism operating to lock said base from accidental detachment from a member W'itnesses':-

tdbelubricnceci. f CHARLES \V. HILLS, J12, be'siiimony whereof we hzive hereunto I EARL M. HARDINE. 

